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Salma U, Plechkova NV, Gontrani L, Carbone M. Ionic Twin Nanostructural Comparison: Propylammonium Butanoate vs. Butylammonium Propanoate and Their Interactions with Water. MATERIALS (BASEL, SWITZERLAND) 2024; 17:4071. [PMID: 39203249 PMCID: PMC11356222 DOI: 10.3390/ma17164071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/26/2024] [Revised: 08/04/2024] [Accepted: 08/14/2024] [Indexed: 09/03/2024]
Abstract
This study investigates the nanostructure of two protic ionic liquids (PILs), [N0 0 0 3][C3CO2] and [N0 0 0 4][C2CO2], with similar polar head groups but varying alkyl chain lengths. An X-ray scattering technique and molecular dynamics simulations have been utilized to characterize the bulk and interfacial properties of these PILs. The findings suggest that the nanostructure of the PILs is primarily determined by the electrostatic forces between charged functional groups playing a dominant role. Despite differences in the alkyl chain lengths, the PILs possess remarkably similar nanostructures. Extending our investigation, we report the impact of water on the nanostructure. Our findings reveal that the addition of water disrupts interactions between cations and anions, weakening Coulombic forces. The disruptive behavior is attributed to the establishment of hydrogen bonds between water and ions. This comprehensive approach provides valuable insights into the nuanced factors shaping the nanostructure of these PILs, which are crucial for tailoring their applications in synthetic chemistry, catalysis, and beyond.
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Affiliation(s)
- Umme Salma
- CNR NANOTEC—Institute of Nanotechnology, Via per Monteroni, 73100 Lecce, Italy
| | - Natalia V. Plechkova
- Wellcome-Wolfson Institute for Experimental Medicine, The Queen’s University of Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK
| | - Lorenzo Gontrani
- Department of Chemical Science and Technologies, University of Rome Tor Vergata, Via della Ricerca Scientifica 1, 00133 Roma, Italy; (L.G.); (M.C.)
| | - Marilena Carbone
- Department of Chemical Science and Technologies, University of Rome Tor Vergata, Via della Ricerca Scientifica 1, 00133 Roma, Italy; (L.G.); (M.C.)
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2
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Wong LN, Imberti S, Warr GG, Atkin R. Bulk nanostructure of a deep eutectic solvent with an amphiphilic hydrogen bond donor. Phys Chem Chem Phys 2023; 25:31068-31076. [PMID: 37946570 DOI: 10.1039/d3cp03587e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2023]
Abstract
Neutron diffraction with empirical potential structure refinement (EPSR) show the deep eutectic solvent (DES) 1 : 4 choline chloride : butyric acid is amphiphilically nanostructured. Nanostructure results from solvophobic interactions between the alkyl chains of the butyric acid hydrogen bond donor (HBD) and is retained with addition of 10 wt% water. EPSR fits to the diffraction data is used to produce a three-dimensional model of the liquid which is interrogated to reveal the interactions leading to the solvophobic effect, and therefore nanostructure, in this DES at atomic resolution. The model shows electrostatic and hydrogen bond interactions cause the cation, anion and HBD acid group to cluster into a polar domain, from which the acid alkyl chains are solvophobically excluded into theapolar domain. The polar and apolar domains percolate through the liquid in a bicontinuous sponge-like structure. The effect of adding 10 wt% water is probed, revealing that water molecules are sequestered around the cation and anion within the polar domain, while the neat bulk structure is retained. Alkyl chain packing in the apolar domain becomes slightly better-defined indicating water marginally strengthens solvophobic segregation. These findings reveal bulk self-assembled nanostructure can be produced in DESs via an amphiphilic HBD.
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Affiliation(s)
- Lucas N Wong
- School of Molecular Sciences, The University of Western Australia, Crawley, Perth 6009, Australia.
| | - Silvia Imberti
- STFC, ISIS Neutron and Muon Source, Rutherford Appleton Laboratory, Didcot OX11 0QX, UK
| | - Gregory G Warr
- School of Chemistry and University of Sydney Nano Institute, The University of Sydney, Sydney, NSW 2006, Australia
| | - Rob Atkin
- School of Molecular Sciences, The University of Western Australia, Crawley, Perth 6009, Australia.
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3
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New Insights into the Structure of Glycols and Derivatives: A Comparative X-Ray Diffraction, Raman and Molecular Dynamics Study of Ethane-1,2-Diol, 2-Methoxyethan-1-ol and 1,2-Dimethoxy Ethane. CRYSTALS 2020. [DOI: 10.3390/cryst10111011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
In this study, we report a detailed experimental and theoretical investigation of three glycol derivatives, namely ethane-1,2-diol, 2-methoxyethan-1-ol and 1,2-dimethoxy ethane. For the first time, the X-ray spectra of the latter two liquids was measured at room temperature, and they were compared with the newly measured spectrum of ethane-1,2-diol. The experimental diffraction patterns were interpreted very satisfactorily with molecular dynamics calculations, and suggest that in liquid ethane-1,2-diol most molecules are found in gauche conformation, with intramolecular hydrogen bonds between the two hydroxyl groups. Intramolecular H-bonds are established in the mono-alkylated diol, but the interaction is weaker. The EDXD study also evidences strong intermolecular hydrogen-bond interactions, with short O···O correlations in both systems, while longer methyl-methyl interactions are found in 1,2-dimethoxy ethane. X-ray studies are complemented by micro Raman investigations at room temperature and at 80 °C, that confirm the conformational analysis predicted by X-ray experiments and simulations.
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4
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Wang YL, Li B, Sarman S, Mocci F, Lu ZY, Yuan J, Laaksonen A, Fayer MD. Microstructural and Dynamical Heterogeneities in Ionic Liquids. Chem Rev 2020; 120:5798-5877. [PMID: 32292036 PMCID: PMC7349628 DOI: 10.1021/acs.chemrev.9b00693] [Citation(s) in RCA: 197] [Impact Index Per Article: 49.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Indexed: 12/11/2022]
Abstract
Ionic liquids (ILs) are a special category of molten salts solely composed of ions with varied molecular symmetry and charge delocalization. The versatility in combining varied cation-anion moieties and in functionalizing ions with different atoms and molecular groups contributes to their peculiar interactions ranging from weak isotropic associations to strong, specific, and anisotropic forces. A delicate interplay among intra- and intermolecular interactions facilitates the formation of heterogeneous microstructures and liquid morphologies, which further contributes to their striking dynamical properties. Microstructural and dynamical heterogeneities of ILs lead to their multifaceted properties described by an inherent designer feature, which makes ILs important candidates for novel solvents, electrolytes, and functional materials in academia and industrial applications. Due to a massive number of combinations of ion pairs with ion species having distinct molecular structures and IL mixtures containing varied molecular solvents, a comprehensive understanding of their hierarchical structural and dynamical quantities is of great significance for a rational selection of ILs with appropriate properties and thereafter advancing their macroscopic functionalities in applications. In this review, we comprehensively trace recent advances in understanding delicate interplay of strong and weak interactions that underpin their complex phase behaviors with a particular emphasis on understanding heterogeneous microstructures and dynamics of ILs in bulk liquids, in mixtures with cosolvents, and in interfacial regions.
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Affiliation(s)
- Yong-Lei Wang
- Department
of Materials and Environmental Chemistry, Arrhenius Laboratory, Stockholm University, SE-106 91 Stockholm, Sweden
| | - Bin Li
- School
of Chemical Engineering and Technology, Sun Yat-sen University, Zhuhai 519082, P. R. China
| | - Sten Sarman
- Department
of Materials and Environmental Chemistry, Arrhenius Laboratory, Stockholm University, SE-106 91 Stockholm, Sweden
| | - Francesca Mocci
- Department
of Chemical and Geological Sciences, University
of Cagliari, I-09042 Monserrato, Italy
| | - Zhong-Yuan Lu
- State
Key Laboratory of Supramolecular Structure and Materials, Institute
of Theoretical Chemistry, Jilin University, Changchun 130021, P. R. China
| | - Jiayin Yuan
- Department
of Materials and Environmental Chemistry, Arrhenius Laboratory, Stockholm University, SE-106 91 Stockholm, Sweden
| | - Aatto Laaksonen
- Department
of Materials and Environmental Chemistry, Arrhenius Laboratory, Stockholm University, SE-106 91 Stockholm, Sweden
- State
Key Laboratory of Materials-Oriented and Chemical Engineering, Nanjing Tech University, Nanjing 210009, P. R. China
- Centre of
Advanced Research in Bionanoconjugates and Biopolymers, Petru Poni Institute of Macromolecular Chemistry Aleea Grigore Ghica-Voda, 41A, 700487 Iasi, Romania
- Department
of Engineering Sciences and Mathematics, Division of Energy Science, Luleå University of Technology, SE-97187 Luleå, Sweden
| | - Michael D. Fayer
- Department
of Chemistry, Stanford University, Stanford, California 94305, United States
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Warr GG, Atkin R. Solvophobicity and amphiphilic self-assembly in neoteric and nanostructured solvents. Curr Opin Colloid Interface Sci 2020. [DOI: 10.1016/j.cocis.2019.12.009] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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6
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Zhang L, Zhang Z, Yuan WL, Zhao N, Zhu QH, He L, Tao GH. Hydrogen-Bonding-Driven Ion-Pair Formation in Protic Ionic Liquid Aqueous Solution. Chemphyschem 2019; 20:3259-3268. [PMID: 31536671 DOI: 10.1002/cphc.201900738] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Revised: 09/17/2019] [Indexed: 11/06/2022]
Abstract
Protic ionic liquids (PILs) in solution especially in water have attracted more and more attention due to their unique properties. The solvation of PILs in water is important to their properties and applications. To explore the solvation of bio-based PILs in water, acidity of 49 [AA]X amino acid ionic liquids (AAILs) consisting of 7 different cations and 7 different anions was studied as a favorable probe. The pKa values for [AA]X PILs containing same cations were obtained and discussed. The acidity strength of the [AA]X PILs varies with both cation and anion which does not follow the conventional assumption that the acidity for PILs is independent of anions. The acidic discrepancy of [AA]X PILs aqueous solution is probably mediated by the formation of ion pairs according to a revised solvation model of PILs. Quantum-chemistry calculation was employed to unpuzzle anion's different effects on the acid balance of cations where cation-anion hydrogen bonds play an important role. Such difference in acidity allows us to understand the formation of solvated ion pairs. This work provides an insight into the fundamental solvation of PILs from acid perspective and their influence on acidity properties for the first time.
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Affiliation(s)
- Lei Zhang
- College of Chemistry, Sichuan University, Chengdu, 610064, China
| | - Zhang Zhang
- College of Chemistry, Sichuan University, Chengdu, 610064, China
| | - Wen-Li Yuan
- College of Chemistry, Sichuan University, Chengdu, 610064, China
| | - Nanrong Zhao
- College of Chemistry, Sichuan University, Chengdu, 610064, China
| | - Qiu-Hong Zhu
- College of Chemistry, Sichuan University, Chengdu, 610064, China
| | - Ling He
- College of Chemistry, Sichuan University, Chengdu, 610064, China
| | - Guo-Hong Tao
- College of Chemistry, Sichuan University, Chengdu, 610064, China
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7
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Diel CL, Cabral VF. Equilibrium properties of protic ionic liquids based on metil-2-hydroxyethylammonium cation. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.02.110] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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8
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Ray P, Elfgen R, Kirchner B. Cation influence on heterocyclic ammonium ionic liquids: a molecular dynamics study. Phys Chem Chem Phys 2019; 21:4472-4486. [DOI: 10.1039/c8cp07683a] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Four different ionic liquids (ILs) consisting of the bis(trifluoromethanesulfonyl)imide ([NTf2]−) anion, with structurally similar systematically varying cations, are investigated herein through classical molecular dynamics.
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Affiliation(s)
- Promit Ray
- Mulliken Center for Theoretical Chemistry
- Rheinische Friedrich-Wilhelms-Universität Bonn
- D-53115 Bonn
- Germany
| | - Roman Elfgen
- Mulliken Center for Theoretical Chemistry
- Rheinische Friedrich-Wilhelms-Universität Bonn
- D-53115 Bonn
- Germany
- Max Planck Institute for Chemical Energy Conversion
| | - Barbara Kirchner
- Mulliken Center for Theoretical Chemistry
- Rheinische Friedrich-Wilhelms-Universität Bonn
- D-53115 Bonn
- Germany
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9
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Kumar P, Prakash P, Ramya KR, Venkatnathan A. Probing translational and rotational dynamics in hydrophilic/hydrophobic anion based imidazolium ionic liquid-water mixtures. SOFT MATTER 2018; 14:6109-6118. [PMID: 29998279 DOI: 10.1039/c8sm00765a] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
In this investigation, we examine the effect of water concentration and temperature on the dynamical properties of [Hmim][Cl] and [Hmim][NTf2] ionic liquids (ILs). The dynamical properties such as translational diffusion coefficients, ion-pair lifetimes, and rotational correlation times are calculated using molecular dynamics simulations. The simulations predict that water concentration also significantly impacts the magnitude of dynamical properties. At low, intermediate and high water concentrations, the following trend in diffusion coefficients is seen: Cl- > Hmim+; Cl- > NTf2-; Hmim+ ([Hmim][Cl]) > Hmim+ ([Hmim] [NTf2]). At ultra-low water concentrations of [Hmim][Cl] IL, several bridge like configurations form between water molecules and Cl- anions, which are supported by a complex distribution of water clusters. The effect of an increase in the water concentration leads to a decrease in ion-pair lifetimes between the Hmim+ cations and Cl-/NTf2- anions, which strongly correlates with the trends observed from the diffusion coefficients. A biexponential function was found to be the best fit for the RACF at neat/ultra-low water concentrations of [Hmim][Cl] and [Hmim][NTf2] ILs, whereas a single exponential function was sufficient to fit the RACF at low, intermediate and high water concentrations. The rotational relaxation time of the Hmim+ cations is larger in neat [Hmim][Cl] compared to that in neat [Hmim][NTf2] with an opposite trend seen with hydration. The rotational correlation time of water molecules is larger in [Hmim][Cl] compared to that in [Hmim][NTf2] at low and intermediate water concentrations, with similar correlation times observed at high water concentrations.
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Affiliation(s)
- Praveen Kumar
- Department of Chemistry and Centre for Energy Science, Indian Institute of Science Education and Research, Pune 411008, India.
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10
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Salma U, Plechkova NV, Caminiti R, Gontrani L. The Opposite Effect of Water and N-Methyl-2-Pyrrolidone Cosolvents on the Nanostructural Organization of Ethylammonium Butanoate Ionic Liquid: A Small- and Wide-Angle X-Ray Scattering and Molecular Dynamics Simulations Study. J Phys Chem B 2017; 121:6399-6407. [DOI: 10.1021/acs.jpcb.7b01837] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | - Natalia V. Plechkova
- The
QUILL Research Centre, School of Chemistry and Chemical Engineering, the Queen’s University of Belfast, Stranmillis Road, Belfast BT9 5AG, United Kingdom
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11
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Gattuso H, García-Iriepa C, Sampedro D, Monari A, Marazzi M. Simulating the Electronic Circular Dichroism Spectra of Photoreversible Peptide Conformations. J Chem Theory Comput 2017; 13:3290-3296. [DOI: 10.1021/acs.jctc.7b00163] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Hugo Gattuso
- Théorie-Modélisation-Simulation, Université de Lorraine − Nancy, SRSMC, Boulevard des Aiguillettes, 54506 Vandoeuvre-lès-Nancy, Nancy, France
- Théorie-Modélisation-Simulation,
CNRS, SRSMC, Boulevard des Aiguillettes, 54506 Vandoeuvre-lès-Nancy, Nancy, France
| | - Cristina García-Iriepa
- Departamento
de Química, Centro de Investigación en Síntesis
Química (CISQ), Universidad de La Rioja, Madre de Dios
53, E-26006 Logroño, Spain
- Unidad
Docente de Química Física, Universidad de Alcalá, E-28871 Alcalá de Henares, Madrid, Spain
| | - Diego Sampedro
- Departamento
de Química, Centro de Investigación en Síntesis
Química (CISQ), Universidad de La Rioja, Madre de Dios
53, E-26006 Logroño, Spain
| | - Antonio Monari
- Théorie-Modélisation-Simulation, Université de Lorraine − Nancy, SRSMC, Boulevard des Aiguillettes, 54506 Vandoeuvre-lès-Nancy, Nancy, France
- Théorie-Modélisation-Simulation,
CNRS, SRSMC, Boulevard des Aiguillettes, 54506 Vandoeuvre-lès-Nancy, Nancy, France
| | - Marco Marazzi
- Théorie-Modélisation-Simulation, Université de Lorraine − Nancy, SRSMC, Boulevard des Aiguillettes, 54506 Vandoeuvre-lès-Nancy, Nancy, France
- Théorie-Modélisation-Simulation,
CNRS, SRSMC, Boulevard des Aiguillettes, 54506 Vandoeuvre-lès-Nancy, Nancy, France
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12
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Gontrani L, Scarpellini E, Caminiti R, Campetella M. Bio ionic liquids and water mixtures: a structural study. RSC Adv 2017. [DOI: 10.1039/c6ra28545g] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
In this study we have explored, by means of ab initio molecular dynamics, a subset of three different water/cho+–phe− mixtures.
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Affiliation(s)
- Lorenzo Gontrani
- Department of Chemistry
- “La Sapienza” University of Rome
- 00185 Rome
- Italy
| | | | - Ruggero Caminiti
- Department of Chemistry
- “La Sapienza” University of Rome
- 00185 Rome
- Italy
| | - Marco Campetella
- Department of Chemistry
- “La Sapienza” University of Rome
- 00185 Rome
- Italy
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